GB2617939A - Current consumption controller - Google Patents

Current consumption controller Download PDF

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Publication number
GB2617939A
GB2617939A GB2310215.5A GB202310215A GB2617939A GB 2617939 A GB2617939 A GB 2617939A GB 202310215 A GB202310215 A GB 202310215A GB 2617939 A GB2617939 A GB 2617939A
Authority
GB
United Kingdom
Prior art keywords
current
control signal
electrical load
new
circuit board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB2310215.5A
Other versions
GB202310215D0 (en
Inventor
Zhang Xin
Fleischer Bruce
Chang Leland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB202310215D0 publication Critical patent/GB202310215D0/en
Publication of GB2617939A publication Critical patent/GB2617939A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
    • G06F1/305—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations in the event of power-supply fluctuations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/3296—Power saving characterised by the action undertaken by lowering the supply or operating voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Sources (AREA)
  • Microcomputers (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

Methods and systems for controlling current consumption by an electrical load of a first circuit board are described. In an example, a device of a first circuit board can measure a current being drawn by the electrical load of the first circuit board from a second circuit board. The device can generate a control signal based on a current difference between the measured current and a target current. The control signal can represent a load control parameter. The device can apply the control signal to the electrical load of the first circuit board to adjust a current consumption by the electrical load.

Claims (25)

1. A device comprising: a current sensing circuit configured to measure a current being drawn by an electrical load of a first circuit board from a second circuit board; a controller being configured to: receive a current difference between the measured current and a target current; generate a control signal based on the current difference, the control signal representing a load control parameter; and apply the control signal to the electrical load of the first circuit board, wherein the application of the control signal adjusts a current consumption by the electrical load.
2. The device of claim 1 , wherein the current sensing circuit and the controller are components of the first circuit board.
3. The device of claim 1 or claim 2, wherein: the current sensing circuit and the controller are connected to a power supply monitor of the first circuit board; the current sensing circuit is configured to send the measured current to the power supply monitor; and the controller is configured to receive the current difference from the power supply monitor.
4. The device of claim 1 , wherein: the current sensing circuit comprises a current sensing resistor and a sense amplifier; a first terminal and a second terminal of the current sensing resistor are coupled to the sense amplifier; and the sense amplifier is configured to output the measured current to a power supply monitor of the first circuit board.
5. The device of any preceding claim, wherein the controller comprises a compensator configured to determine the load control parameter based on the current difference.
6. The device of claim 5, wherein the compensator is an analog compensator.
7. The device of claim 5, wherein the compensator is a digital compensator.
8. The device of claim 1 , wherein the control signal is a first control signal, and the controller is configured to combine the first control signal with a default control signal to generate a second control signal, the default control signal representing a default load control parameter received from another device external to the first circuit board.
9. The device of claim 1 , wherein the adjustment to the current consumption comprises an adjustment to an operating frequency of the electrical load by a factor defined by the load control parameter.
10. The device of claim 1, wherein the target current is a predefined value stored in a memory of the first circuit board.
11 . The device of claim 1 , wherein the controller is further configured to: receive a new current difference between the target current and a new current, the new current being an amount of current drawn by the electrical load in response to the adjustment of the current using the control signal; generate a new control signal based on the new current difference; and apply the new control signal to the electrical load to re-adjust the current consumption by the electrical load.
12. The device of claim 1, wherein the electrical load is a graphics processing unit (GPU).
13. An apparatus comprising: an electrical load; a voltage regulator connected to the electrical load; a power supply pin configured to receive a current from a circuit board external to the apparatus; a current sensing circuit connected to the power supply pin and the voltage regulator, the current sensing circuit being configured to measure the current being received by the power supply pin; a controller connected to the electrical load and the voltage regulator, the controller being configured to: receive a current difference between the measured current and a target current; generate a control signal based on the current difference, the control signal representing a load control parameter; and apply the control signal to the electrical load, wherein the application of the control signal adjusts a current consumption by the electrical load.
14. The apparatus of claim 13 further comprises a power supply monitor connected to the voltage regulator, the current sensing circuit, and the controller, wherein the power supply monitor is configured to: receive the measured current from the current sensing circuit; determine the current difference between the measured current and the target current; and send the current difference to the controller.
15. The apparatus of claim 13, wherein: the current sensing circuit comprises a current sensing resistor and a sense amplifier; a first terminal and a second terminal of the current sensing resistor are coupled to the sense amplifier; and the sense amplifier is configured to output the measured current to a power supply monitor of the apparatus.
16. The apparatus of claim 13, wherein the controller comprises a compensator configured to determine the load control parameter based on the current difference.
17. The apparatus of claim 13, wherein the control signal is a first control signal, and the controller is configured to combine the first control signal with a default control signal to generate a second control signal, the default control signal representing a default load control parameter received from a device external to the apparatus.
18. The apparatus of claim 13, wherein the adjustment to the current consumption comprises an adjustment to an operating frequency of the electrical load by a factor defined by the load control parameter.
19. The apparatus of claim 13, wherein the target current is a predefined value stored in a memory of the apparatus.
20. The apparatus of claim 13, wherein the electrical load is a graphics processing unit (GPU).
21. The apparatus of claim 13 further comprises a power supply monitor, wherein: the voltage regulator is configured to: measure a new current being drawn by the electrical load; and send the measurement of the new current to the power supply monitor; the power supply monitor is configured to: compare the measurement of the new current with the target current; determine a new current difference between the target current and the new current; and send the new current difference to the controller; the controller is further configured to: generate a new control signal based on the said another modulated current; and 22 apply the new control signal to the electrical load to re-adjust the current consumption by the electrical load.
22. A method for controlling current consumption by an electrical load, the method comprising: measuring, by a device on a first circuit board, a current being drawn by an electrical load of the first circuit board from a second circuit board; generating, by the device, a control signal based on a current difference between the measured current and a target current, the control signal representing a load control parameter; and applying, by the device, the control signal to the electrical load of the first circuit board, wherein the application of the control signal adjusts a current consumption by the electrical load.
23. The method of claim 22, wherein generating the control signal comprises combining, by the device, the load control parameter with a default load control parameter.
24. The method of claim 22, further comprising: measuring, by the device, a new current being drawn by the electrical load; generating, by the device, a new control signal based on a new current difference between the new measured current and the target current; and applying, by the device, the new control signal to the electrical load of the first circuit board to re-adjust the current consumption by the electrical load.
25. The method of claim 22, wherein the electrical load is a graphics processing unit (GPU).
GB2310215.5A 2020-12-15 2021-11-25 Current consumption controller Pending GB2617939A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17/122,128 US11860702B2 (en) 2020-12-15 2020-12-15 Current consumption controller
PCT/IB2021/060970 WO2022130074A1 (en) 2020-12-15 2021-11-25 Current consumption controller

Publications (2)

Publication Number Publication Date
GB202310215D0 GB202310215D0 (en) 2023-08-16
GB2617939A true GB2617939A (en) 2023-10-25

Family

ID=81941468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2310215.5A Pending GB2617939A (en) 2020-12-15 2021-11-25 Current consumption controller

Country Status (6)

Country Link
US (1) US11860702B2 (en)
JP (1) JP2023552423A (en)
CN (1) CN116569465A (en)
DE (1) DE112021005858T5 (en)
GB (1) GB2617939A (en)
WO (1) WO2022130074A1 (en)

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CN102263492A (en) * 2010-05-28 2011-11-30 瑞萨电子株式会社 Semiconductor device and power supply device
US20200363860A1 (en) * 2019-05-15 2020-11-19 Intel Corporation System, Apparatus And Method For Dynamically Controlling Current Consumption Of Processing Circuits Of A Processor

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US20200363860A1 (en) * 2019-05-15 2020-11-19 Intel Corporation System, Apparatus And Method For Dynamically Controlling Current Consumption Of Processing Circuits Of A Processor

Also Published As

Publication number Publication date
US11860702B2 (en) 2024-01-02
JP2023552423A (en) 2023-12-15
CN116569465A (en) 2023-08-08
WO2022130074A1 (en) 2022-06-23
US20220187892A1 (en) 2022-06-16
GB202310215D0 (en) 2023-08-16
DE112021005858T5 (en) 2023-10-19

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